Build (method = -2) #dp: 736 Step-3' Graph: 209 vertices and 620 arcs (0.00s) Step-4' Graph: 42 vertices and 286 arcs (0.01s) #V4/#V3 = 0.20 #A4/#A3 = 0.46 Ready! (0.01s) Optimize a model with 81 rows, 287 columns and 781 nonzeros Presolve removed 23 rows and 35 columns Presolve time: 0.00s Presolved: 58 rows, 252 columns, 692 nonzeros Variable types: 0 continuous, 252 integer (0 binary) Found heuristic solution: objective 356.0000000 Found heuristic solution: objective 322.0000000 Optimize a model with 58 rows, 252 columns and 692 nonzeros Presolved: 58 rows, 252 columns, 692 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.320e+02 Factor NZ : 9.600e+02 Factor Ops : 1.866e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.16959276e+03 -3.54798157e+03 1.14e+04 2.22e-16 5.75e+01 0s 1 6.43935969e+02 -1.36927748e+03 1.04e+03 6.66e-16 7.48e+00 0s 2 3.39137285e+02 -3.11644684e+02 4.45e+01 9.99e-16 1.34e+00 0s 3 2.64635503e+02 1.55766845e+01 1.65e+00 4.44e-16 4.77e-01 0s 4 2.25521322e+02 1.70966283e+02 4.68e-01 2.22e-16 1.04e-01 0s 5 2.11238950e+02 2.01032318e+02 1.31e-01 1.17e-16 1.95e-02 0s 6 2.07213677e+02 2.06769270e+02 6.46e-03 1.79e-16 8.49e-04 0s 7 2.07000011e+02 2.06999956e+02 2.83e-07 3.33e-16 1.04e-07 0s 8 2.07000000e+02 2.07000000e+02 9.72e-13 2.22e-16 1.04e-10 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 2.07000000e+02 Root relaxation: objective 2.070000e+02, 149 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 207.0000000 207.00000 0.0% - 0s Explored 0 nodes (149 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.070000000000e+02, best bound 2.070000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 207 Solution: 9 x [1] 14 x [2] 5 x [3] 2 x [4] 4 x [5, 39] 8 x [6, 38] 7 x [7, 37] 10 x [8] 6 x [9, 34] 10 x [9, 35] 5 x [10, 32] 16 x [11, 28] 15 x [12, 27] 1 x [12, 32] 8 x [13, 22] 7 x [13, 25] 1 x [13, 32] 4 x [14, 24] 2 x [14, 28] 8 x [15, 21] 5 x [16, 21] 3 x [17, 20] 10 x [18, 19] 6 x [19, 23] 1 x [19, 25] 2 x [20, 21] 11 x [20, 26] 2 x [23, 29, 37] 3 x [23, 29, 38] 9 x [25, 32, 37] 1 x [27, 33] 7 x [29, 31, 38] 2 x [30, 33, 34] 3 x [30, 33, 36]